Asked by: Romualda Vieitoasked in category: General Last Updated: 1st March, 2020
What does a question mark mean in Java?
Then, what is the use of question mark in Java?
) is known as the wildcard in generic programming . It represents an unknown type. The wildcard can be used in a variety of situations such as the type of a parameter, field, or local variable; sometimes as a return type.
Likewise, what does question mark mean in angular? Safe Navigation Operator
Thereof, what does question mark mean in C programming?
”) has one principal use in the C computer language (outside of string literals and comment text). It is used in the conditional operator (the sole ternary operator in C). It separates the test from the do-when-true expression: (test) ? (
What Does a colon mean Java?
The colon is a shortcut for iterating over a collection. The variable on the left of the colon is a temporary variable containing a single element from the collection on the right. With each iteration through the loop, Java pulls the next element from the collection and assigns it to the temp variable.